There has been several emails on this subject of fuel return. I am wondering why this is being discussed and for what purpose. The fuel being used per hour is important but the return amount should not be of importance unless the engine is not operating properly. Curious Leonard Stern, INDIFFERENCE

Leonard, I don’t know why the OP was interested, but an engine such as a Detroit that returns a lot of fuel can act as a defacto fuel polisher and transfer pump. Duncan McCallie M/V Turning Point Sent from my iPhone > On Apr 1, 2020, at 9:38 PM, Leonard Stern via Trawlers-and-Trawlering <trawlers@lists.trawlering.com> wrote: > > There has been several emails on this subject of fuel return. I am wondering why this is being discussed and for what purpose. The fuel being used per hour is important but the return amount should not be of importance unless the engine is not operating properly. > > Curious > Leonard Stern, INDIFFERENCE > _______________________________________________ > http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com > > To unsubscribe or modify your subscription options (get password, change email address, etc) go to: http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com > Trawlers & Trawlering and T&T are trademarks of Water World > Productions. Unauthorized use is prohibited.

I think the two reasons are consumption analysis and heat. For accurate consumption, you need to measure the inflow and return, and the temperature effects the measurement. On pure temperature, I have heard that some people prefer to return their fuel to the day tank rather than the main tanks as the return is much hotter. I presume it’s to limit growth in the main tank, but I don’t fully get it... On our older NA Perkins, there’s apparently not much return at any time, but I’ve only just bought some gauges to see what is actually going on... Rob > On 2 Apr 2020, at 3:39 pm, Leonard Stern via Trawlers-and-Trawlering <trawlers@lists.trawlering.com> wrote: > > There has been several emails on this subject of fuel return. I am wondering why this is being discussed and for what purpose. The fuel being used per hour is important but the return amount should not be of importance unless the engine is not operating properly. > > Curious > Leonard Stern, INDIFFERENCE > _______________________________________________ > http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com > > To unsubscribe or modify your subscription options (get password, change email address, etc) go to: http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com > Trawlers & Trawlering and T&T are trademarks of Water World > Productions. Unauthorized use is prohibited.